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https://www.readbyqxmd.com/read/29453931/comparison-of-return-to-pre-injury-sport-after-10-mm-size-bone-patellar-tendon-bone-bptb-versus-8-mm-hamstring-anterior-cruciate-ligament-reconstruction-a-retrospective-study-with-a-two-year-follow-up
#1
Rimtautas Gudas, Rokas Jurkonis, Alfredas Smailys
BACKGROUND The aim of this study was to evaluate the reconstruction of a torn anterior cruciate ligament (ACL) with 10 mm diameter BPTB (bone-patellar tendon-bone) autograft versus 8 mm HT (hamstring tendon) autografts, to compare the ability to restore pre-injury sports activities and reduce revision risk after these procedures. MATERIAL AND METHODS A prospective clinical review was performed to compare results of patients who underwent primary anatomical ACLR with 10 mm BPTB autografts with patients who underwent 8 mm diameter HT autografts, between January 2011 and January 2014...
February 17, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29453890/the-co-developmental-dynamic-of-sport-and-school-burnout-among-student-athletes-the-role-of-achievement-goals
#2
Matilda Sorkkila, Kaisa Aunola, Katariina Salmela-Aro, Asko Tolvanen, Tatiana V Ryba
Student-athletes who strive for success in high level sports while pursuing upper secondary education may be prone to sport and school burnout. The present study examined the co-developmental dynamic of sport and school burnout in Finnish adolescent student-athletes (N time 1 = 391; N time 2 = 373) across the first year of upper secondary school by using cross-lagged structural equation modeling (SEM). Furthermore, we used sport and school-related achievement goals as predictors of sport and school burnout, namely, sport and school-related exhaustion, cynicism, and feelings of inadequacy...
February 17, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29453743/neuromuscular-control-deficits-and-the-risk-of-subsequent-injury-after-a-concussion-a-scoping-review
#3
REVIEW
David R Howell, Robert C Lynall, Thomas A Buckley, Daniel C Herman
An emerging area of research has identified that an increased risk of musculoskeletal injury may exist upon returning to sports after a sport-related concussion. The mechanisms underlying this recently discovered phenomenon, however, remain unknown. One theorized reason for this increased injury risk includes residual neuromuscular control deficits that remain impaired despite clinical recovery. Thus, the objectives of this review were: (1) to summarize the literature examining the relationship between concussion and risk of subsequent injury and (2) to summarize the literature for one mechanism with a theorized association with this increased injury risk, i...
February 17, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29453741/fuel-for-the-work-required-a-theoretical-framework-for-carbohydrate-periodization-and-the-glycogen-threshold-hypothesis
#4
Samuel G Impey, Mark A Hearris, Kelly M Hammond, Jonathan D Bartlett, Julien Louis, Graeme L Close, James P Morton
Deliberately training with reduced carbohydrate (CHO) availability to enhance endurance-training-induced metabolic adaptations of skeletal muscle (i.e. the 'train low, compete high' paradigm) is a hot topic within sport nutrition. Train-low studies involve periodically training (e.g., 30-50% of training sessions) with reduced CHO availability, where train-low models include twice per day training, fasted training, post-exercise CHO restriction and 'sleep low, train low'. When compared with high CHO availability, data suggest that augmented cell signalling (73% of 11 studies), gene expression (75% of 12 studies) and training-induced increases in oxidative enzyme activity/protein content (78% of 9 studies) associated with 'train low' are especially apparent when training sessions are commenced within a specific range of muscle glycogen concentrations...
February 16, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29450627/can-the-use-of-a-single-integrated-unitary-autonomic-index-provide-early-clues-for-eventual-eligibility-for-olympic-games
#5
Daniela Lucini, Roberto Sala, Antonio Spataro, Mara Malacarne, Manuela Benzi, Stefano Tamorri, Massimo Pagani
PURPOSE: Optimal autonomic regulation and stress resilience might be considered critical elements of athletic performance. We hypothesize that a novel unitary autonomic index for sports (ANSIs), together with a somatic stress related symptom score (4SQ) might help characterize athletes who were eventually selected for the Rio 2016 Olympic Games Italian team (Rio +). METHODS: In this retrospective study we examined 778 athletes (age 24.4 ± 6.7 yrs) who underwent a planned yearly pre-participation screening...
February 15, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29450501/temporal-estimation-in-prediction-motion-tasks-is-biased-by-a-moving-destination
#6
Jonathan C Flavell, Brendan T Barrett, John G Buckley, Julie M Harris, Andrew J Scally, Nathan B Beebe, Alice G Cruickshank, Simon J Bennett
An ability to predict the time-to-contact (TTC) of moving objects that become momentarily hidden is advantageous in everyday life and could be particularly so in fast-ball sports. Prediction motion (PM) experiments have sought to test this ability using tasks where a disappearing target moves toward a stationary destination. Here, we developed two novel versions of the PM task in which the destination either moved away from (Chase) or toward (Attract) the moving target. The target and destination moved with different speeds such that collision occurred 750, 1,000 or 1,250 ms after target occlusion...
February 1, 2018: Journal of Vision
https://www.readbyqxmd.com/read/29450207/fixation-of-traumatic-chondral-only-fragments-of-the-knee-in-pediatric-and-adolescent-athletes-a-retrospective-multicenter-report
#7
Peter D Fabricant, Yi-Meng Yen, Dennis E Kramer, Mininder S Kocher, Lyle J Micheli, J Todd R Lawrence, Theodore J Ganley, Benton E Heyworth
Background: While traditional biological principles have suggested that fragments consisting of cartilage alone cannot be reaffixed to bone with expectable long-term healing, case reports of successful healing after fixation in younger patients indicate that this concept remains incompletely explored. Purpose: To evaluate the presenting features, techniques, healing rates, and clinical and radiological results in a cohort of pediatric and adolescent athletes who underwent fixation of traumatic chondral-only fragments in the knee...
February 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29450135/development-of-a-specific-index-to-detect-malnutrition-in-athletes-validity-in-weight-class-or-intermittent-fasted-athletes
#8
François D Desgorces, Christophe Moinard, Mounir Chennaoui, Jean-François Toussaint, Cyril Petibois, Philippe Noirez
Fasted or weight-category athletes manage their training under strict diet conditions that could impair the stress-recovery balance and result in acute or chronic fatigue. However, to date, no validated biomarker are available to quantify this phenomena. The aim of this study was to assess the validity of a specific index combining plasma albumin and weight change to detect nutrition-related risks of fatigue increase and under-performance in athletes experiencing particular nutritional conditions. An athlete's nutrition risk index (ANRI) equation, based on data from lightweight and heavyweight rowers, was developed using relationship between plasma albumin concentrations combined to weight changes with sport performance and overtraining scores and was tested by odds ratio for failure...
June 2017: Biochimie Open
https://www.readbyqxmd.com/read/29449771/the-effectiveness-of-manual-physical-therapy-interventions-in-pediatric-patients-with-anterior-hip-pain-a-retrospective-study
#9
Mindy Galleher, Briana Crowe, Mitchell Selhorst
Objectives: The purposes of this study were to: (1) assess the benefit of adding manual therapy (MT) to physical therapy care in pediatric patients with anterior hip pain; (2) assess the relative risk of adverse reactions when MT is used; and (3) report the types of MT used. Methods: This study was a retrospective chart review of patients treated in a hospital-based sports medicine clinic. The charts of 201 patients (mean age = 14.23 ± 2.15 years) met the inclusion criteria and were reviewed...
December 2017: Journal of Manual & Manipulative Therapy
https://www.readbyqxmd.com/read/29449001/balance-assessment-during-squatting-exercise-a-comparison-between-laboratory-grade-force-plate-and-a-commercial-low-cost-device
#10
Alessandro Mengarelli, Federica Verdini, Stefano Cardarelli, Francesco Di Nardo, Laura Burattini, Sandro Fioretti
Testing balance through squatting exercise is a central part of many rehabilitation programs and sports and plays also an important role in clinical evaluation of residual motor ability. The assessment of center of pressure (CoP) displacement and its parametrization is commonly used to describe and analyze squat movement and the laboratory-grade force plates (FP) are the gold standard for measuring balance performances from a dynamic view-point. However, the Nintendo Wii Balance Board (NWBB) has been recently proposed as an inexpensive and easily available device for measuring ground reaction force and CoP displacement in standing balance tasks...
February 5, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29448827/outcomes-after-primary-repair-of-insertional-ruptures-of-the-achilles-tendon
#11
Oliver Nickolaas Schipper, Robert Bentley Anderson, Bruce E Cohen
BACKGROUND: Achilles tendon insertional sleeve avulsions occur when the Achilles distal tendon sleeve ruptures off of its insertion into the calcaneal tuberosity, sometimes with a small bony fragment from calcific tendinosis. Little evidence exists describing the outcomes and rerupture rate after operative management of Achilles tendon sleeve avulsions. METHODS: A retrospective chart review was performed to identify patients who sustained an Achilles sleeve avulsion injury treated with operative repair between October 2005 and July 2014...
February 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29446708/does-local-dynamic-stability-of-kayak-paddling-technique-affect-the-sports-performance-a-pilot-study
#12
Daniel Hamacher, Tobias Krebs, Guido Meyer, Astrid Zech
During competition, kayak athletes must optimally adapt to environmental factors (e.g. wind, waves) to achieve peak performance. However, the ability to adapt to such perturbations has never been assessed in kayak paddling. Therefore, the aim of the current study was to evaluate the local dynamic stability in sports technique of youth sprint kayak athletes. In a cross-sectional study, 14 healthy male athletes were recruited from an elite youth sprint kayak squad. During an incremental kayak ergometer test, mean power, heart rates and local dynamic technique stability of hands, arms, trunk and paddle were registered and the association with the athletes 2000 m free-water times were estimated using mixed models...
February 15, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29445615/thermodynamic-effects-of-commercially-available-ice-boots
#13
Madison N Quintanar, Tess Pu'uwaionalani Millar, Matthew A Burd
The limb of the equine athlete is subjected to all types of various stressors during exercise. To ensure the health of the horse and to prevent the possibility of lameness, it has been a common practice to apply cold therapy to the distal limb of the horse pre- and post-exercise. Commercially available boots are widely available for the application of cold therapy. To test the effectiveness of the boot, 6 healthy performance level sport type horses were exercised at a walk, trot, and canter in a round-pen and then subjected to the application of the ice boot for 20 minutes on a treatment leg, and no ice boot on an untreated leg...
2018: Open Veterinary Journal
https://www.readbyqxmd.com/read/29444576/-fractures-of-the-fifth-metatarsal-base
#14
K Bušková, D Kuběnová, M Tuček
Fractures of the fifth metatarsal base are among the most common fractures of the foot. They are typically caused by indirect violence during sports activities. This region is also a site where stress fractures occur frequently. Diagnosis is based on the patients medical history, clinical examination and imaging methods. The fundamental imaging method is radiography of the foot in three views. MRI is used primarily for early diagnosis of stress fractures. CT examination is beneficial mainly in complex foot injuries, in order to rule out associated fractures...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29444266/fundamentals-of-glycogen-metabolism-for-coaches-and-athletes
#15
Bob Murray, Christine Rosenbloom
The ability of athletes to train day after day depends in large part on adequate restoration of muscle glycogen stores, a process that requires the consumption of sufficient dietary carbohydrates and ample time. Providing effective guidance to athletes and others wishing to enhance training adaptations and improve performance requires an understanding of the normal variations in muscle glycogen content in response to training and diet; the time required for adequate restoration of glycogen stores; the influence of the amount, type, and timing of carbohydrate intake on glycogen resynthesis; and the impact of other nutrients on glycogenesis...
February 10, 2018: Nutrition Reviews
https://www.readbyqxmd.com/read/29442577/high-rate-of-return-to-yoga-for-athletes-after-hip-arthroscopy-for-femoroacetabular-impingement-syndrome
#16
Rachel M Frank, Gift Ukwuani, Bradley Allison, Ian Clapp, Shane J Nho
BACKGROUND: Femoroacetabular impingement syndrome (FAIS) is most commonly diagnosed in patients who perform activities that require repetitive hip flexion and rotational loading. Yoga is an activity growing in popularity that involves these motions. The purpose of this study was to evaluate patients' ability to return to yoga after hip arthroscopy for FAIS. HYPOTHESIS: There would be a high rate of return to yoga after hip arthroscopy. STUDY DESIGN: Retrospective analysis...
February 1, 2018: Sports Health
https://www.readbyqxmd.com/read/29440159/multicentre-study-on-capsular-closure-versus-non-capsular-closure-during-hip-arthroscopy-in-danish-patients-with-femoroacetabular-impingement-fai-protocol-for-a-randomised-controlled-trial
#17
Christian Dippmann, Otto Kraemer, Bent Lund, Michael Krogsgaard, Per Hölmich, Martin Lind, Karen Briggs, Marc Philippon, Bjarne Mygind-Klavsen
INTRODUCTION: Hip arthroscopy has become a standard procedure in the treatment of hip joint pain not related to osteoarthritis or dysplasia in the young and active patient. There has been increasing focus on the contribution of the hip capsule to function and on stability following hip arthroscopy. It has been suggested that capsular closure after hip arthroscopy may prevent microinstability and macroinstability of the hip joint and reduce revision rate. However, it remains unknown whether capsular closure should be performed as a standard procedure when performing hip arthroscopies, especially in patients without additional risk factors for instability such as hypermobility or dysplasia of the hip...
February 10, 2018: BMJ Open
https://www.readbyqxmd.com/read/29438628/rotator-cuff-repair-in-adolescent-athletes
#18
Michael G Azzam, Jeffrey R Dugas, James R Andrews, Samuel R Goldstein, Benton A Emblom, E Lyle Cain
BACKGROUND: Rotator cuff tears are rare injuries in adolescents but cause significant morbidity if unrecognized. Previous literature on rotator cuff repairs in adolescents is limited to small case series, with few data to guide treatment. HYPOTHESIS: Adolescent patients would have excellent functional outcome scores and return to the same level of sports participation after rotator cuff repair but would have some difficulty with returning to overhead sports. STUDY DESIGN: Case series; Level of evidence 4...
February 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29436923/thriving-on-pressure-a-factor-mixture-analysis-of-sport-performers-responses-to-competitive-encounters
#19
Daniel J Brown, Rachel Arnold, Martyn Standage, David Fletcher
Although considerable research exists on performers' responses to sporting encounters, little is known about thriving in sport contexts. The current study examined if distinct response patterns existed between sport performers who thrived in competitive encounters compared with those who did not. Participants were 535 sport performers (134 women; M age = 23.60 years, SD age = 8.08; M competing = 11.84 years, SD competing = 7.11). Results of factor mixture analysis supported a four-profile solution comprising a thriving group (n = 146), a low-functioning group (n = 38), and two groups characterized by scores marginally above (n = 131) and below (n = 209) the sample mean...
February 13, 2018: Journal of Sport & Exercise Psychology
https://www.readbyqxmd.com/read/29435749/skills-in-minimally-invasive-and-open-surgery-show-limited-transferability-to-robotic-surgery-results-from-a-prospective-study
#20
Karl-Friedrich Kowalewski, Mona W Schmidt, Tanja Proctor, Moritz Pohl, Erica Wennberg, Emir Karadza, Philipp Romero, Hannes G Kenngott, Beat P Müller-Stich, Felix Nickel
BACKGROUND: There is limited evidence on the transferability of conventional laparoscopic and open surgical skills to robotic-assisted surgery. The primary aim of this study was to evaluate the transferability of expertise in conventional laparoscopy and open surgery to robotic-assisted surgery using the da Vinci Skills Simulator (dVSS). Secondary aims included evaluating the influence of individual participants' characteristics. METHODS: Participants performed four tasks on the dVSS: Peg Board 1 (PB), Pick and Place (PP), Thread the Rings (TR), and Suture Sponge 1 (SS)...
February 12, 2018: Surgical Endoscopy
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